Typewriter



A. H. ADAMS. T-YPEWRITER. APPLICATION FILED JAN.26. l92l.

Am y M m M4, m r v m m M A. H. ADAMS.

TYPEWRITER.

APPLICATION FILED JAN.26. 1921.

Patented Aug. 22, 1922.

2 SHEETS-SHEET 2.

l III? 5 7 2% Z h 7 fw UNITED STATES PATENT OFFICE.

ARTHUR H. ADAMS, OF .GALION, OHIO, ASSIGNOR T0 WESTERN ELECTRIC COMPANY, INCORPORATED, 015 NEVT YORK, N. Y., A CORPORATION OF NEW YORK.

TYPEWRITER.

To all whom it may concern:

Be it known'that I, ARTHUR H. Animus, a citizen of the United States of America, re

siding atGalion, in the county of Crawford sion of means for automatically correcting the direction of travel of the paper from the roll to the platen.

Another object is the provision of a paper tearing element combined with means for controlling the positionof a set of guide rollers with respect to the platen. 7

Other objects will appear hereinafter.

The invention is disclosed in the accompanying drawings as appliedto a telegraph receiving printer, although it is obviously not limited to such a combination. Inasmuch as. the printer structure has been described in detail in my copending appl1cation, Serial No. 260,111, filed October 29, 1918, and especially since it does not form a part of the present invention a detailed description is believed unnecessary here.

The invention is illustrated in the accompanying drawings, wherein F ig. 1 is evertical sectional view of the receiving printer disclosed in my above referred to copending application; Fig. 2 is a front elevation of the paper platen, paper guiding mechanism and paper holder disclosed in F 1g, 1; Flg. 3 is a view showing a flexible metallic spring for causing the printing medium to conform to the periphery of the platen; Fig. 4 1s a detailed view of the automatic paper travel correcting mechanism; Fig. 5 is a detailed view showing the method of supporting the dowel or spindle, while Fig. 6 is a view of the adjustable paper tearing element.

Figs; 1, 2 and 6, show an adjustable paper tearing edge, which in addition to serving as a reliable and efficient tearing device, in no way interferes with the visibility of the printed message. The paper tearing edge consists of a flexible cord or wire 5 stretched tightly across and near the paper platen. In Fig. 6 the cord 5 is shown connected to I Specification of Letters fratent. Patented Aug. 22, 1922. Original application filed October 29, 1918, Serial No. 260,111.

Divided and this application filed January Serial No. 439,965.

one end of a stationary member 6 on an upright 7 while the opposite end of the cord 5 1s shown connected to an adjustable memher 8 carried by an upright 9, which is rigidly connected to the corresponding upright 7 by the connecting portion 10. The holder consisting of the arms 7 and 9, and the base portion 10 is arranged to be pivotally co'n nected to any suitable part of the frame mechanism by means of hinges l1 and 12. In addition to the paper'tearing edge 5 there 1s provided a similar cord or wire 13,

which extends parallel with the cord 5 and edge be of small diameter and of material having high tensile strength. In this connection fine piano wire has been found to be very satisfactory.

The paper tearing edge is useful only when employing roll paper or paper of continuous length, and is non-essential when the printer is used for manifolding or when employing sheets of uniform length. Therefore, when 'manifolding, the tearing edge and holder therefor'may be rotated around its pivotal bearings 11 and 12 and turned into the position shown by the dotted lines in Fig. 1. Combined with the paper tearing edge is a set of pressure rollers 15 and 14, which rollers are adapted to be held in close proximity with the paper platen when single strips of paper are employed. There is one pressure roller provided near each end of the paper platen, and each roller extends through an opening in a paper shield 34, and is normally held in position by means of supporting members 16, which are held in position by spring members 22 as shown in full line in Fig. 1. These rollers feeding a plurality of sheets simultaneously;

i a When the-paper tearing edgeis thrown back,

into the dotteddineposition,Fig. 1-, the por tion' connecting uprights 7 and 9 is moved into the dotted hne position, thereby forcing the members 16 and the pressure rollers carlT-iiad thereby down. into a position shown in dottedlines, Thus, it will be seen that the members 7, 9and' 10 not only serve as a support to the paper tearing edge, but also serve to remove the pressure rollers from the paper platen whent'hey are not required.

, Another. advantageous. feature of this,in-

vention is-=that when a new roll of paper is placed'inthe machine, and; it is desired'to start the paper around the, periphery of the platen, the paper tearing edge may bemo'ved to a position intermediateof the twopos1- tionsfl shown in Fig. 1, andin sodoing,.the

pressure. rollers will. be, lowered, thereby making it easy. to. start the. paper around the platen.

' Thepaperor printingmedium-on which the characters are recorded. is. commonly used in roll formnvhich may, be mounted on a dowel orspindle 17, ascis clearly shown in Fig. 2. The dowel 17 isiprovided with spring membersfl l and25 for holdingxthe paper roll'in position.. .The dowell? is also provided with a metal pin extending through the center thereof, which pin is U supporteda't eachendby the frame of the machine. To prevent the roll from turning too, freely, thereis provided a springmemher 19iwhich engagesthe end of the supporting pinand'forces the dowel17 againstthe support 20. The friction set upbetweenthe spring 19' and the metal pin, and between the dowel and the support 20 issufficientto prevent the roll from overrunning llhe dowel or'spindle 17 has. cut in one end there- I of'a series of grooves 38 andin these grooves there is positioned azcireular springm ember 39. These groovesare arranged so: that-the spindlewill conveniently.accommodate paper ofvarious widths, and by the use of the member-.89 the paper will. be guidedproperly. The paper or printing medium 21 is drawn from the underside of the roll over a spring supported idler .or guide rod 26. Thence, under, around. and over the platen, thence overv the paper. supporting fingers 30 to a suitable spool or take-up device. The

guide rod126 consists of a cylindrical surface with rubber spool heads or washers 23 paper roller as described.

quently happens that the paper, instead. of being fedforward horizontally. in a straight mypreviously referred to copendingapplication, or by. suitable manually operated means, the roller 26; and]. spring supporting members will oscillate freely up and down, and gradually withdraw the paper from the- However, it frepath, will-travel faster along one edge, than the other, and will cause the characters to be printed in "lines diagonal: of. the paper,

and may even. eventually preventor interrupt the fe aedingrof,the. paperr, To: avoid such a. condition, this invention contemplates the provision of means. for automatically correcting the feeding of the, paper. This feature is clearly illustratedin Figs..2and

1. In case thepaper, due to; unevenness,

sure. rollers, on for. any. reason. whatsoever, travelsfaster. onone side than on the other, and consequently travels over. to theright or leftofthe center, the paper'in passing over theguide roller 26 willfforcethe rollerlandwashers 23 sidewise so that. the endofthe rod 26 is held rigidly by its. engagement with ithe stationary part of. the machine. Only Thepaper guide fingers 30, are carried flexible spiral springs 29 andf 31, which springs are mounted. on arms 32 aand 33 respectively, and whlch. arms arezp votally connected n any suitable manner to the different pressures being. applied to the presframe of themachine. It will. benoted that i the guidelingers are so supported-thatthe center of the paper is open orex-posed, thereby makingiteasy. to change the paper rolls and to, start new strips of paperl around. the platen. i i also arrangedrso that when manifolding, or when feedingaplurality of sheets of paper, the fingers may be movedwback. out of, the vway, as shown in dotted lines, Fig. 1. This position is of positive utility in; handling books ofrflimsy, keeping them out of-the cam shaft. 1 I

In Fig. 3 1 is. a detailed View showing a' paper shield or guide 34,..and" a flexible metallic band 35 for causing ,the printing medium to conformv to the-periphery, of the platen. One end of each metallic-spring is connected to a setof flexible. fingers 36, best shown in Fig. 1, whichfingers are also for These supporting..jfingers 3() are the purpose of holding the paper close to the platen. The other end of the metallic band being free to oscillate when the paper travels.

in a uniform longitudinal direction and a portion thereof'being restrained from movement when the paper travels in a transverse direction whereby the direction of travel of the paper is automatically corrected.

2. In combination, a paper holder, means for drawing paper from said holder in a longitudinal direction, a paper take-up device over which said paper travels, saiddevice being free to oscillate when the paper travels in a uniform longitudinal direction,

and means associated with said device for preventing free oscillation of a portion thereof when the paper is shifted ina transverse direction.

3. In combination, a paper platen, a support, a roll of paper carried by said support, means for drawing the paper from said roll and around said platen, a take-up device comprising an oscillating roller over which said paper travels, and means associated with said roller for arresting one end thereof when the paper travels in a trans verse direction,

4. In a paper feeding mechanism, a paper holder, means for drawing paper from said holder in a longitudinal direction, a depressible guide roller over which said paper travels, means associated with said roller and adapted to be engaged thereby when the paper moves in a transverse direction for automatically correcting the direction of travel of the paper.

5. In a paper feeding mechanism, a support, a roll of paper, paper carriedby said support, means for drawing paper from said roll in a longitudinal direction an idler over which said paper travels, said idler normally maintaining a horizontal position and being responsive to transverse movement of the paper in either direction, and means cooperating with the idler when moved in one direction to throw it at an angle with respect to the horizontal plane to thereby cause the paper to return to its normal direction of travel.

6. In a paper feeding mechanism, a support, a roll of paper carried by said support, means for drawing paper from said roll in a longitudinal direction, an idler over which said paper travels, flexible supports for said idler, being free to oscillate with said supports and to be moved transversely thereof, means cooperating with the idler when moved in a transverse direction for holding said idler at an angle with respect to a horizontal plane thereby automatically correcting the direction of travel of the paper.

7. In a paper feeding mechanism, a paper tearing element comprising a flexible cord, a holder therefor, and means for adjusting the tension of said cord.

8. In a paper feeding mechanism, a plurality of flexible cords, and supports for said cords, one of said cords serving as a paper guide and another of said cords serving as a paper tearing element.

9. In a paper feeding mechanism a spindle, paper carried by said spindle, a feed roller around which said paper is adapted to travel, means for guiding the paper around said roller, a paper tearing device, means for moving said paper tearing device into and out of operative relation with respect to said paper, and means controlled by said last-mentioned means for controlling the position of said paper guiding means.

10. In a paper feeding mechanism a feed roller around which paper is adapted to travel, means for guiding the paper around said roller, a paper tearing device, a movable holder for said paper tearing device, and means operated upon the movement of said holder for changing the position of said paper guiding means with respect to said feed roller,

11. In a paper feeding mechanism a feed roller around which paper is adapted to travel, means for guiding the paper around said roller, a pivoted supporting means for said guiding means, a paper tearing device and a holder therefor arranged to engage said supporting means to move said guiding means into and out of operative relation with respect to said feed roller.

12. In a paper feeding mechanism, a paper holder having a plurality of grooves in one end thereof, means for drawing the paper in a horizontal direction, and .means arranged to fit in such grooves for permitting the accommodation of paper of different widths on said holder.

13. In combination, a roll of paper, a support for said paper having a plurality of grooves in one end thereof, and a spiral spring arranged to fit in such grooves for permitting the use of paper of different widths. o

In witness whereof, I hereunto subscribe my name this 21 day of J anuar A. D., 1921.

ARTHUR I- ADAMS. 

